During cellular respiration, H2O is produced as a result of the: reduction of O2 at the end of the electron transport chain. conversion of pyruvate to acetyl CoA. chemiosmosis process. combining of CO2 with protons. degradation of glucose to pyruvate.
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3. Which isn't an end product of glycolysis? 2 water molecules, carbon dioxide molecules, 2 ATP, NADH. Before the Krebs cycle, Pyruvate from glycolysis binds to an enzyme that makes it easier to break down. Carbon dioxide is released and a molecule of NADH is formed. What is the name given to the molecule that now enters the Krebs cycle? Phosphofructokinase, Phosphoglucoisomerase, Acetyl CoA, Acetyl CoB. The final step in the process of cellular respiration is the electron transport chain (ETC). What best describes the first step in the electron transport chain? Electrons in the inner membrane are energized by the Sun. Hydrogen ions diffuse through the membrane. Energized electrons from NADH and FADH2 activate transport proteins. Electrons from NADH and FADH2 bond with hydrogen ions to form water molecules. Once enough H+ ions have been pumped outside the membrane, they tend to move back inside the membrane. What is this random movement of particles from areas of high concentration to low concentration called? Exocytosis, Active transport, Diffusion, Endocytosis.
Adi S.
Glycolysis occurs when glucose molecules are converted into molecules that are then coupled with NAD+. This process produces 2 ATP molecules per glucose molecule. Before entering the citric acid cycle, pyruvate has to be converted to acetyl-CoA. This reduces NAD+ to NADH and releases CO2. When 1 molecule enters the citric acid cycle, it reduces 3 NAD+ and 1 FAD to NADH and FADH2, respectively. This process also produces 1 ATP and 2 CO2 molecules and uses water. In oxidative phosphorylation, complexes dump electrons into the intermembrane space. Complex I accepts electrons from NADH and complex II accepts electrons from FADH2. After the electron has traveled through the chain, it is accepted by an oxygen molecule and 2 H+ ions. Going from high to low concentration, the H+ ions flow through ATP synthase to produce ATP.
Sri K.
Electrons oxygen reduced oxidized ATP NAD+ 1. The transfer of from one molecule to another is an oxidation-reduction reaction, or redox reaction. 2. In cellular respiration, glucose becomes to carbon dioxide (CO2) as it loses electrons (in hydrogen atoms). 3. In cellular respiration, oxygen becomes to water (H2O) as it gains electrons (in hydrogen atoms) that came from glucose. 4. In cellular respiration, organic molecules become oxidized as picks up electrons and H+ and becomes reduced to NADH. 5. NADH delivers electrons to an electron transport chain, which passes the electrons through carrier molecules in a series of redox reactions to the final electron acceptor, 6. The energy released from the redox reactions in the electron transport chain is used by the cell to make
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